ceramic temperature coefficients chart

Q:

What are ceramic temperature coefficients?

A:

Ceramic temperature coefficients specifies how much a MLCC’s capacitance will change with applied temperature.

Sometimes this coefficient is called the “dielectric type.”

Each letter of the designation has a meaning, as shown these charts.

Class 1 Ceramic Temperature Coefficient

Coefficient ppm/°C Multiplier Tolerance of Temp Coefficient (ppm)
C = 0 0 = -1 G = 30
B = 0.3 1 = -10 H = 60
U = 0.8  2 = -100  J = 120
 A = 0.9  3 = -1000  K = 250

For example, C0G can vary 30ppm / °C

Class 2 and 3 Ceramic Temperature Coefficients

Low Temp Range High Temp Range Cap Shift from 25°C
X = -55°C 5 = +85°C R = ±15%
 Z = +10°C  7 = +125°C  S = ±22%
 Y = -30°C  8 = +150°C  U = +22 / -56%
 V = +22 / -82%

For example, X7R can vary ±15% from -55°C to +125°C

Additional Information

EIA-198 from ECIA provides more information.

Added on:

Thursday, July 23rd, 2015